Iimveliso
4-(4-Methoxyphenyl) -2-butanone
Ifomula yoLwakhiwo
Ngokwasemzimbeni
Imbonakalo: alunambala ukuya kulwelo olunamafutha omthubi
Ubuninzi: 1.046 g/mL ku-25 ° C (lit.)
Indawo yokunyibilika: 8 ° C (lit.)
Indawo yokubila: 152-153 ° C/15 mmHg (ilayiti.)
Isalathiso se-refractive: n20/D 1.519 (lit.)
Indawo edanyazayo:>230 °F
Idatha yoKhuseleko
Ikhowudi yeCustoms: 2914299090
Ixabiso lembuyekezo yeRhafu yokuThumela ngaphandle(%):13%
Isicelo
Isishwankathelo;I-4-(4-methoxyphenyl) -2-butanone ingasetyenziselwa ukulungiselela i-4-p-hydroxyphenyl-2-butanone, i-4-p-hydroxyphenyl-2-butanone, eyaziwa ngokuba yi-raspberry ketone, i-pendant ketone, i-raspberry ketone (i-raspberryketone) , yafunyanwa nguNomura et al.eJapan ngo-1918, yachongwa ngo-1957 njengeyona nto iphambili yevumba elimnandi kumaqunube.
Inkqubo yokuvelisa: I-Raspberry ketone kunye ne-dimethyl sulfate njengezinto eziluhlaza, ukusabela kwe-etherification ukuvelisa.
Ukulungiselela:
1. i-condensation reaction kunye ne-aldehyde ye-aniseed, i-acetone kunye ne-sodium hydroxide njengezinto eziluhlaza, emva kokuba i-reaction igqityiwe, i-alkali engaphantsi ihlulwe, kwaye ioli ephezulu ingathathi hlangothi, ihlanjwe kwaye ihlanjwe ukuze ifumane i-solvent ukufumana i-aniseed butenone;
2. yongeza i-anisyl butenone kwi-alcohol ye-anhydrous, yongeza i-catalyst kwaye ugxobhoze impendulo nge-hydrogen, i-distill kunye nokubuyisela i-solvent emva kokusabela.
Emva kokusabela, i-alcohol ye-anhydrous yafunyanwa ngokuxutywa kwe-distillation ukufumana imveliso ye-hydrogenated anisyl acetone.
I-acetone ye-anisyl ingasetyenziselwa ukulungiselela i-raspberry ketone, kubandakanywa namanyathelo athile alandelayo: i-anisyl acetone, i-potassium hydroxide, i-N, i-N.
I-dimethylacetamide yongezwa kwi-tetra eyomileyo] efakwe i-thermometer, i-funnel yokuwisa, kunye netyhubhu ejiyayo, ifudunyezwe ukuze inyibilike, emva koko iyashukunyiswa.
Phantsi kweemeko ezivuselelayo, i-demethyl reagent yongezwa kancinci kancinci kwaye isiqina sayekwa ukuba sinyibilike ngokupheleleyo.Umxube udluliselwe kwi-autoclave phantsi kokhuseleko lwegesi ye-inert kwaye uphendule phantsi koxinzelelo.Umxube wokusabela wawungathathi hlangothi ukuba ungathathi hlangothi, kwaye isigaba se-oyile sakhutshwa kwaye sachithwa phantsi koxinzelelo olucuthiweyo ukulungiselela i-raspberry ketone ekrwada.Imveliso ekrwada ye-raspberry ketone yachithwa kunye ne-solvent kunye ne-crystallized ukufumana imveliso ecocekileyo ye-raspberry ketone.Isivuno sokwenziwa kwaba
85.2%, kunye nokucoceka imveliso kwaba 98 5%.
IAnisylacetone lulwelo olunamafutha angenambala ukuya kumthubi kunye nevumba lentyatyambo kunye neziqhamo.Yinto ephakathi yedobutamine, ngoku esetyenziswa ikakhulu njengesiqholo ukulungiselela iintlobo ngeentlobo zencasa zeziqhamo, kwaye isetyenziswa kwiziselo ezibandayo, iziselo ezibandayo, iilekese, ukutya okubhakiweyo kunye nokutya kwepudding.Sisinongo somgangatho ophezulu noko.Ikwayinto enomtsalane kwizinambuzane ezinjenge scarabs.
